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Dr. Jonathan Tammela, MD

Dr. Jonathan Tammela, MD

Medical Oncology*
25+ years of experience

Dr. Jonathan Tammela, MD is a medical oncologist in Santa Maria, CA and has over 25 years of experience in the medical field. Dr. Tammela has extensive experience in Gynecologic Neoplasms. He graduated from INDIANA UNIVERSITY / BLOOMINGTON in 1998. He is affiliated with medical facilities Dignity Health-Arroyo Grande Community Hospital and Marian Regional Medical Center. He is accepting new patients and telehealth appointments.

3.7 Star Rating
Based on 29 reviews 3.7 Star Rating (29 reviews)

Office Hours

Monday

8:30 am
to
5 pm

Tuesday

8:30 am
to
5 pm

Wednesday

8:30 am
to
5 pm

Thursday

8:30 am
to
5 pm

Friday

8:30 am
to
5 pm
Call us 24/7 to securely book an appointment
1325 E Church St Ste 202
Santa Maria, CA 93454

Locations

Mission Hope Cancer Center

Mission Hope Cancer Center1325 E Church St Ste 202 Santa Maria, CA 93454
1
  • Call
  • Fax
  • Hours
    • Mon: 8:30am - 5:00pm
    • Tue: 8:30am - 5:00pm
    • Wed: 8:30am - 5:00pm
    • Thu: 8:30am - 5:00pm
    • Fri: 8:30am - 5:00pm
  • Directions
New Patient?
(805) 212-1043

Hospital Highlight

Dr. Tammela is affiliated with Marian Regional Medical Center Santa Maria, a highly rated hospital.

Dr. Tammela is a Healthgrades Choice provider in Obstetrics & Gynecology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Explains Conditions WellPatients said this doctor explains conditions well. See reviews
  • Offers TelehealthThis doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Clean HospitalPatients said the hospital this doctor practices at is clean. See hospitals

Experience Check

Search for experience in a specific area

Dr. Tammela's Reviews

Likelihood to recommend Dr. Tammela

3.7
29 ratings, 8 with a written review
5 star
66%
66%
4 star
0%
0%
3 star
0%
0%
2 star
3%
3%
1 star
31%
31%

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Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

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Beware for lack of ethics
0/5 if I could. I was subjected to a very inappropriate phone contact at this location. There is a complete disregard for ethics. I wouldn’t recommend anyone to be treated here as they clearly do not care for the feelings of their patients. The patient experience involves not just the physician care but also the values of the employees around him. I was brushed aside without even an apology for my concerns as a patient. Mission, vision, and values of the organization were clearly not considered when this event was reviewed. It is sad to see this happen as I went out of my way to be seen at this location due to the specialty. If I had a Time Machine I would go back and never visit this location. I would prefer the non-Dignity Health location as originally referred. Patients beware.
What went well
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • I didn't feel respected
  • Difficult to schedule appointment
  • Staff wasn't friendly
  • Long wait times
Helpful
Aug 22, 2023
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Dr Tammela did an amazing job with my ovarian cancer surgery and treatment. I found him to be very caring and very professional. His staff was also wonderful. I have absolute trust in him and am thankful he was there at a very scary time in my life.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
6 others found this helpful
Helpful
Sarah Gossen – Jun 07, 2023
We are pleased to hear of your positive... Read More
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Renowned Surgeon
Robotic Surgery Rockstar. If I lived on the other side of the world I would travel to Santa Maria to be treated by Dr. Tammela.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Annie G. – Jun 05, 2023
We are pleased to hear of your positive... Read More
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What a jerk. Hard to imagine how he could have a worse bedside manner-- more than just arrogant, a real jerk. He's no unicorn-- plenty of good docs around, without subjecting yourself to his brusque, uninterested manner. The office staff is horrible, unfriendly and unhelpful. They take their cue from him, no doubt.
What went well
No results
What could be improved
No results
12 others found this helpful
Helpful
Tonya – Oct 19, 2020
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So grateful for dr Tammela and office staff. He performed a full hysterectomy due to severe stage 4 endometriosis. I am now feeling great and they have been so helpful throughout the entire process. So glad my Gyn sent the referral to de tammela. Very talented Dr.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
7 others found this helpful
Helpful
MS in Shafter, CA – Jun 12, 2019
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Dr. Tammela performed a hysterectomy on me removing everything but ovaries. It was a very unexpected procedure I needed to have done, I was scared out of my mind and he put me at ease. He also did an absolutely amazing job. I had to have a vertical incision, but I had no nerve damage and the scar has healed beautifully. He is wonderful doctor, with an outstanding staff.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
5 others found this helpful
Helpful
Sarah S. in WI – Jul 21, 2018
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My experience with dr. Tammela was a very positive one...the procedure itself was not something I would ever want to do again but Dr. Tammela is very caring and understanding. I had a problem with pain on a Sunday and he took the call himself, very impressive. Everyone in his office was very nice also.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
7 others found this helpful
Helpful
KY in Skandia, MI – Mar 13, 2017
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Dr. Tammela has 2 outstanding nurse practitioners who are female; Martha and Kristen. When you are facing a very personal female crisis regarding your health, these women know just the right words and instruction to give you. They are intelligent, compassionate and reassuring. The entire team is fabulous
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
24 others found this helpful
Helpful
nan oswald in Manitowoc, WI – Jan 21, 2016
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About Me

Watch Dr. Tammela's Video

biography

Dr. Jonathan Tammela, MD is a medical oncologist in Santa Maria, CA and has over 25 years of experience in the medical field. Dr. Tammela has extensive experience in Gynecologic Neoplasms. He graduated from INDIANA UNIVERSITY / BLOOMINGTON in 1998....read more
  • Medical Oncology

  • Gynecologic Oncology

  • Obstetrics & Gynecology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Indiana University / Bloomington

    Medical School, 1998
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Dr. Tammela is a Healthgrades Choice provider in Obstetrics & Gynecology

    Read our methodology

    Affiliated Hospitals

    • Marian Regional Medical Center

      1400 E Church St
      Santa Maria, CA 93454
      Recipient of 4
      hospital awards

      America's 250 Best Hospitals Award™ (2023)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards

      How patients felt about the care they received at this hospital.

      89%
      Patients said they were given information about recovering at home

      5% higher than the national average

      74%
      Patients said that doctors always listened to them and explained things well

      2% lower than the national average

      View all patient feedback
    • Dignity Health-Arroyo Grande Community Hospital

      345 S Halcyon Rd
      Arroyo Grande, CA 93420
      Recipient of 4
      hospital awards

      America's 250 Best Hospitals Award™ (2023)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards
    Learn more about how Healthgrades measures Hospital Quality